The Muscles and Joints Of the Body have about 650 Muscles and Joints in the body. Our skeleton is made up of 206 bones. There are many different type of bones like long, short, irregular and flat bones also hard bones. The bones are here to get you to stand up straight and walk .

Joints and Movements 

Your joints are where the bones are meet. There are three parts to this.

  1. The fixed joint, which cannot move.  
  2. The partly moveable Joint that can move about in certain criteria.
  3. The freely moveable joints that can move in any direction.    

 Here are some kinds of joints.    

  • The saddle Joint allows movement into two directions just like the thumb.  

  • The Pivot joint is a special joint that has a ring, which fits into axis vertebra. This joint allows rotation of about 1800. An example of this joint is the top of the neck to the head.                                                 
  • The ball and socket joint is the most movable joint. It comprises of a ball that fits into a socket. The hip joint is a good example. The disadvantage to this joint is that the movement is limited.

   

  • The gliding joint can be found in the spine. Small sliding movements to take place. The joints are nearly flat .
  • The condyloid joint is a joint found on the wrist .  This joint also allows movement back and forward and side-to-side. The radius and the ulna have ends, which are hollow and can fit into bones of the wrist.  

  • The hinge joint, is just replica of the movement a hinge on a door. It can swing back and forward.  Part of the bone  becomes hollow. The joint will go back and forth. An example would be the elbow.  

                                The knee  

                This is combined of the thigh bone (femur) muscle knee cap (patella).  They also have fibula and tibia. The cartilage and ligaments holds the bones together. The cartilage is found in other parts of the body and used to protect the organs.  They are connected also by using muscles and connective tissue. The connective tissue is important to the skeleton because it is tough. They consist of rubbery material in which cells are embedded together with strengthening fibres.

The ligaments join bones together by the usage of tissue made of fibres. Joints are held by ligaments, this make bones stick together so that they cannot be move far apart but it will allow them to bend freely.

The tendons are made up of collagen fibres, which are springy. They also join muscles to bones or other parts of the body. They enable the muscle to exert a pulling action.    

                                The Arm

        The arm has three parts the upper, shoulder arm and the lower arm or (fore arm). The upper arm consists of the humerus. This is very long. The forearm consists of ulna, radius, carpals, phalanges and metacarpals. These can twist so that the hand can rotate .The hand is consisted of short angular bones, and the finger contain short angular bones. Then there is the shoulder, which has the clavicle and scapula.    

                

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                               The Leg

The Legs have heavy bones as well as the feet because they carry more weight. The feet are just like hand with tarsals, metatarsals and phalanges. There are   only 2 bones in the foreleg these are the fibula and tibia. For running and jumping the thighbone (femur) has to be strong otherwise we would not be able to walk after completing these exercises.  The pelvis is attached to the femur. In the pelvis is a pair of hip bones attached to the spine at the sacrum.        

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